Preparation and Characterization of LaNiO2.5-Ba(Zr0.1Ce0.7Y0.2)O3-δ Composite Cathode for Intermediate Temperature Solid Oxide Fuel Cells

doi:10.7652/xjtuxb201302016

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Preparation and Characterization of LaNiO_2.5-Ba(Zr_0.1Ce_0.7Y_0.2)O_3-δ Composite Cathode for Intermediate Temperature Solid Oxide Fuel Cells

更新时间：2025-07-09

- Preparation and Characterization of LaNiO_2.5-Ba(Zr_0.1Ce_0.7Y_0.2)O_3-δ Composite Cathode for Intermediate Temperature Solid Oxide Fuel Cells
- Vol. 47, Issue 2, Pages: 92-96(2013)
- 作者机构：
  
  西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201302016
  CLC： TM911.4
- Online First：10 February 2013，
  
  Published：2013
- 稿件说明：
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Preparation and Characterization of LaNiO_2.5-Ba(Zr_0.1Ce_0.7Y_0.2)O_3-δ Composite Cathode for Intermediate Temperature Solid Oxide Fuel Cells[J]. 2013, 47(2): 92-96. DOI: 10.7652/xjtuxb201302016.
DOI：

Preparation and Characterization of LaNiO_2.5-Ba(Zr_0.1Ce_0.7Y_0.2)O_3-δ Composite Cathode for Intermediate Temperature Solid Oxide Fuel Cells[J]. 2013, 47(2): 92-96. DOI: 10.7652/xjtuxb201302016. DOI：

摘要

采用柠檬酸盐法合成了LaNiO

粉体

对其进行氢化物还原反应

制得具有单一结构的高氧缺位物相LaNiO

2.5

。以Ba(Zr

0.1

0.7

0.2

3-δ

(BZCY)为电解质制备了LaNiO

2.5

-BZCY复合阴极

利用扫描电镜对其微观结构进行了表征

并通过交流阻抗测试及直流极化测试对其电化学性能进行了研究。结果表明

LaNiO

2.5

-BZCY复合阴极在600～800 ℃范围内的极化面电阻为5.27 ～0.22 Ω·cm

其氧还原反应速率控制步骤为氧分子的解离以及氧原子的电荷转移。另外

该阴极的极化过电势较高

在750 ℃及电流密度为0.05 A·cm

-2

时的极化过电势为75 mV。

Abstract

LaNiO

is synthesized by the citric acid method

and LaNiO

2.5

is prepared by hydride reduction reaction for the LaNiO

. Then a LaNiO

2.5

-Ba(Zr

0.1

0.7

0.2

3-δ

composite cathode is manufactured with Ba(Zr

0.1

0.7

0.2

3-δ

as the electrolyte. The microstructure of the cathode is observed by scanning electron microscopy(SEM)and the electrochemical properties are characterized by both AC

impedance and DC polarization measurements. The cathode polarization resistances get to 5.27～0.22 Ω·cm

in a temperature range of 600～800 ℃. The rate-limiting of oxygen reduction reaction is governed by dissociation of oxygen molecules and charge transfer of oxygen atoms. The cathode overpotential reaches relatively high as 75 mV with current density of 0.05 A·cm

-2

and at 750 ℃.

关键词

Keywords

references

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